'unpublished virtues of the earth'

CORDELIA

What can man's wisdom
In the restoring his bereaved sense?
He that helps him take all my outward worth.

DOCTOR

There is means, madam:
Our foster-nurse of nature is repose,
The which he lacks; that to provoke in him,
Are many simples operative, whose power
Will close the eye of anguish.

CORDELIA

All blest secrets,
All you unpublished virtues of the earth,
Spring with my tears! be aidant and remediate
In the good man's distress! Seek, seek for him;
Lest his ungovern'd rage dissolve the life
That wants the means to lead it.

—William Shakespeare, King Lear (IV.v) (1606)